Malawi, one of the largest and deepest (700 m) lakes in the World, is
feeling the change. The lake is know as a hotspot of biodiversity, with
over 800 species of fish, and also for its productive fisheries that
are the main source of protein to local populations. The lake's
ecology, however, is being affected by both climate change and
intensifying land use in its watershed. Though its deep waters are not
saline and renewed on a time scale of several decades, Lake Malawi is
considered meromictic, and oxygen is absent in its water column below 200 m.
are investigating the changing physical stratification in this Great
Lake, the associated biogeochemical cycling of carbon and nutrients,
and the potential for more frequent fish kills, as the lake's
productivity may be increasing under the increasing loading of
nutrients from watershed.